111051000100551 has 16 divisors (see below), whose sum is σ = 169300732981248. Its totient is φ = 63427653818400.

The previous prime is 111051000100429. The next prime is 111051000100553. The reversal of 111051000100551 is 155001000150111.

It is not a de Polignac number, because 111051000100551 - 2¹⁰ = 111051000099527 is a prime.

It is a super-2 number, since 2×111051000100551² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111051000100553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1252476480 + ... + 1252565141.

It is an arithmetic number, because the mean of its divisors is an integer number (10581295811328).

Almost surely, 2^{111051000100551} is an apocalyptic number.

111051000100551 is a deficient number, since it is larger than the sum of its proper divisors (58249732880697).

111051000100551 is a wasteful number, since it uses less digits than its factorization.

111051000100551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2505043742.

The product of its (nonzero) digits is 125, while the sum is 21.

Adding to 111051000100551 its reverse (155001000150111), we get a palindrome (266052000250662).

The spelling of 111051000100551 in words is "one hundred eleven trillion, fifty-one billion, one hundred thousand, five hundred fifty-one".